154549920 has 144 divisors (see below), whose sum is σ = 566401248. Its totient is φ = 35320320.

The previous prime is 154549919. The next prime is 154549931. The reversal of 154549920 is 29945451.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20235 + ... + 26805.

It is an arithmetic number, because the mean of its divisors is an integer number (3933342).

Almost surely, 2^154549920 is an apocalyptic number.

154549920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 154549920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283200624).

154549920 is an abundant number, since it is smaller than the sum of its proper divisors (411851328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

154549920 is a wasteful number, since it uses less digits than its factorization.

154549920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6603 (or 6588 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 154549920 is about 12431.8108093713. The cubic root of 154549920 is about 536.6480984964.

The spelling of 154549920 in words is "one hundred fifty-four million, five hundred forty-nine thousand, nine hundred twenty".